#define grey18_width 16
#define grey18_height 16
static char grey18_bits[] = {
 0x15,0x15,0xaa,0xaa,0x51,0x51,0xaa,0xaa,0x15,0x15,0xaa,0xaa,0x51,0x51,0xaa,
 0xaa,0x15,0x15,0xaa,0xaa,0x51,0x51,0xaa,0xaa,0x15,0x15,0xaa,0xaa,0x51,0x51,
 0xaa,0xaa};